I'm fighting litwick (gives 1 special attack EV) to increase my solosis' special attack stat, but its not strong enough to defeat litwicks on its own so I gave it an exp share and fought using dewott. Do both dewott and solosis receive 1 EV or do they receive 1/2 each? Also if I DON'T have exp share and I switch pkmn in the middle of the battle do both receive full EVs or split EVs?